package cn.easy.mortgage.zxing;

import cn.easy.mortgage.zxing.util.BufferedImageLuminanceSource;
import com.google.zxing.*;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.springside.modules.utils.io.FileUtil;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

/**
 * @Description: (二维码)
 * @author：000512
 */
public class ZXingCode
{
    /**
     * 给二维码图片添加Logo
     *
     * @param qrPic
     * @param logoPic
     */
    public void addLogo_QRCode(File qrPic, File logoPic) {
        // logo默认边框颜色
        Color DEFAULT_BORDERCOLOR = Color.WHITE;
        // logo默认边框宽度
        int DEFAULT_BORDER = 2;
        // logo大小默认为照片的1/5
        int DEFAULT_LOGOPART = 5;
        int border = DEFAULT_BORDER;
        Color borderColor = DEFAULT_BORDERCOLOR;
        int logoPart;

        try {
            if (!qrPic.isFile() || !logoPic.isFile()) {
                System.out.print("file not find !");
                System.exit(0);
            }
            /**
             * 读取二维码图片，并构建绘图对象
             */
            BufferedImage image = ImageIO.read(qrPic);
            Graphics2D g = image.createGraphics();
            /**
             * 读取Logo图片
             */
            BufferedImage logo = ImageIO.read(logoPic);
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null),
                    heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null);
            // 计算图片放置位置
            /**
             * logo放在中心
             */
            /* int x = (image.getWidth() - widthLogo) / 2;
               int y = (image.getHeight() - heightLogo) / 2;*/
            /**
             * logo放在右下角
             */
            int x = (image.getWidth() - widthLogo);
            int y = (image.getHeight() - heightLogo);
            //开始绘制图片
            g.drawImage(logo, x, y, widthLogo, heightLogo, null);
            g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
            g.setStroke(new BasicStroke(border));
            g.setColor(borderColor);
            g.drawRect(x, y, widthLogo, heightLogo);
            g.dispose();
            logo.flush();
            image.flush();
            ImageIO.write(image, "png", new File("D:/二维码生成/TDC-"/*+new Date().getTime()*/ + "test.png"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 二维码的解析
     *
     * @param file
     */
    public void parseQR_CODEImage(File file) {
        try {
            MultiFormatReader formatReader = new MultiFormatReader();
            // File file = new File(filePath);
            if (!file.exists()) {
                return;
            }
            BufferedImage image = ImageIO.read(file);

            LuminanceSource source = new BufferedImageLuminanceSource(image);
            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

            Map hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
            Result result = formatReader.decode(binaryBitmap, hints);
            System.out.println("result = " + result.toString());
            System.out.println("resultFormat = " + result.getBarcodeFormat());
            System.out.println("resultText = " + result.getText());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 将二维码生成为文件
     *
     * @param bi
     * @param imageFormat
     * @param file
     */
    public static void bufferedImage2ImageFile(BufferedImage bi, String imageFormat, File file) {
        try {
            if (FileUtil.isFileExists(file) || file.getName().trim().isEmpty()) {
                throw new IllegalArgumentException("文件异常，或扩展名有问题！");
            }
            ImageIO.write(bi, imageFormat, file);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 构建初始化二维码
     *
     * @param bm
     * @return
     */
    public static BufferedImage fileToBufferedImage(BitMatrix bm) {
        BufferedImage image = null;
        try {
            int w = bm.getWidth(), h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
            // 开始利用二维码数据创建Bitmap图片，分别设为白（0xFFFFFFFF）黑（0xFF000000）两色
            for (int x = 0; x < w; x++) {
                for (int y = 0; y < h; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
                }
            }       } catch (Exception e) {
            e.printStackTrace();
        }
        return image;
    }

    /**
     * 生成二维码bufferedImage图片
     *
     * @param content
     *            编码内容
     * @param barcodeFormat
     *            编码类型
     * @param width
     *            图片宽度
     * @param height
     *            图片高度
     * @param hints
     *            设置参数
     * @return
     */
    public static BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints)
    {
        MultiFormatWriter multiFormatWriter = null;
        BitMatrix bm = null;
        multiFormatWriter = new MultiFormatWriter();
        // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
        try {
            bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
        } catch (WriterException e) {
            e.printStackTrace();
        }
        return fileToBufferedImage(bm);
    }

    /**
     * 设置二维码的格式参数
     *
     * @return
     */
    public static Map<EncodeHintType, Object> getDecodeHintType()
    {
        // 用于设置QR二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
        // 设置QR二维码的纠错级别（H为最高级别）具体级别信息
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置编码方式
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 0);
        hints.put(EncodeHintType.MAX_SIZE, 350);
        hints.put(EncodeHintType.MIN_SIZE, 100);
        return hints;
    }

    public static void encoderZXCode(String content, String imgPath, int width, int height) {
        try {
            BufferedImage bim = getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, width, height, getDecodeHintType());
            bufferedImage2ImageFile(bim, "png", new File(imgPath));
        } catch (Exception var6) {
            var6.printStackTrace();
        }
    }
}

